Here, to raise up is an idiom for causing someone who has died to become alive again. AT: "caused him to live again" (See: [[rc://en/ta/man/translate/figs-idiom]])
From among all those who have died. This expression describes all dead people together in the underworld. To raise someone from among them speaks of making that person alive again.
This can be stated in active form. AT: "The disciples who traveled with Jesus from Galilee to Jerusalem saw him for many days" (See: [[rc://en/ta/man/translate/figs-activepassive]])
# many days
We know from other writings that this period was 40 days. Translate "many days" with a term that would be appropriate for that length of time.